package com.qk.interceptor;

import com.qk.utils.JwtUtils;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

@Slf4j
@Component
public class TokenInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //1.获取请求路径
        String uri = request.getRequestURI();
        //2.判断是否为登录,如果是,放行
        if(uri.contains("login")){
            log.info("登录请求{},放行", uri);
            return true;
        }
        //3.获取请求头中的token
        String token = request.getHeader("token");
        //4.判断token是否存在,如果不存在,响应401状态码
        if(token == null){
            log.info("请求头中缺少token");
            response.setStatus(401);
            return false;
        }
        //5.解析令牌,判断令牌是否有效,如果无效,响应401状态码
        try{
            JwtUtils.parseToken(token);
        }catch (Exception e){
            log.info("令牌解析失败");
            response.setStatus(401);
            return false;
        }

        //6.放行
        return true;
    }
}
